Idle speed parameters.
Idle Speed - Sets the hot idle speed.
Disable idle valve - Disables the idle valve error checking if no idle valve is present.
Idle Valve Duty Cycle Adjustment - alters the idle valve duty cycle feedback with a proportional adjustment based on the slider position. If the idle tends to dip too low when releasing the throttle, increase the slider. If the idle speed tends to hang too high, decrease the slider.
The idle target lambda sets the air fuel ratio while hot idling. With large injectors it may be necessary to enrichen the hot idle to prevent lean misfires.